Using the most current version of Dapper this behavior does not exist.
If it happens again reopen this bug, but I tested it for a good 20
minutes with different file types, directorys, and combinations of left
clicking and right clicking.
** Changed in: gedit (Ubuntu)
Status: Unconfirmed => Rejected
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gedit does not get focus when opening more than one document
https://launchpad.net/bugs/48097